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LA70020 Datasheet(PDF) 3 Page - Sanyo Semicon Device

Part No. LA70020
Description  Recording/Playback Amplifier for VHS VCRs
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Maker  SANYO [Sanyo Semicon Device]
Homepage  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LA70020 Datasheet(HTML) 3 Page - Sanyo Semicon Device

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No. 5711-3/13
LA70020, 70020M
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
HA playback threshold level
HAP-1
SP
→ EP : *11.7
5.0
V
HAP-2
EPSP
0.0
1.3
V
SW30 threshold level
SW30-1
Lch
→ Hch : *11.2
5.0
V
SW30-2
Hch
→ Lch
0.0
0.8
V
Recording Mode
Current drain
ICCR
Current input at pin 13.
52
59
66
mA
VRSP
Output level for VIN = 400 mVp-p and
127
135
143
mVp-p
REC AGC AMP output level
f = 4 MHz.
VREP
104
111
119
mVp-p
Intermode gain difference
∆GVR
VRSP/VREP
1.4
1.7
2.0
dB
∆VAGC1-SP Output level divided by VRSP or VREP for
0.5
1.0
dB
REC AGC AMP control characteristic
∆VAGC1-EP f = 4 MHz and VIN = 700 mVp-p.
∆VAGC2-SP Output level divided by VRSP or VREP for
–1.0
–0.5
dB
∆VAGC2-EP f = 4 MHz and VIN = 100 mVp-p.
REC AGC AMP frequency characteristic
∆VFRS
Ratio of f = 7 MHz output to f = 1 MHz output
–1
0
+1
dB
∆VFRE
for VIN = 400 mVp-p. *2
∆VHDRS Ratio of the 8 MHz (secondary) component of
REC AGC AMP secondary primary distortion
∆VHDRE the output to its 4-MHz (primary) component
–45
–40
dB
for VIN = 400 mVp-p and f = 4 MHz.
REC AGC AMP maximum output level
∆VMOSP Output level, for f = 4 MHz, at which the
20
22
mApp
∆VMOEP secondary distortion is –35 dB.
REC AGC AMP muting attenuation
∆VMRS
Output level divided by VRSP or VREP for
–45
–40
dB
∆VMRE
f = 4 MHz and VIN = 400 mVp-p.
∆VCYS
Output ratio (4M +/ 629k)/4M for
REC AGC AMP cross modulation relative level
∆VCYE
VIN = 400 mVp-p and f = 4 MHz at T9A and
–45
–40
dB
VIN = 2.4 Vp-p and f = 629 kHz at T10A.
HA REC threshold level
HAR-1
SP
→ EP : *11.7
5.0
V
HAR-2
EP
→ SP
0.0
1.3
V
REC MUTE threshold level
MUTE-1
MUTE OFF
→ MUTE ON *11.2
2.8
V
MUTE-2
MUTE ON
→ MUTE OFF
3.2
5.0
V
REC PB threshold level
PB-REC
PB
→ REC *11.2
5.0
V
REC-PB
REC
→ PB
0.0
0.8
V
Continued from preceding page.
Notes:* Before measuring the items under Playback Mode, input a 0 to 5.0 V trigger pulse to T11 (H-SYNC), the pin from which the LA70020 takes its T9
(HA) control switch timing.
* The resistance between pins 19 and 20 must be accurate to within 1.0%.
*1. These are voltage application points.
*2. Apply a DC voltage of approximately 1.8 V to the AGC wave detector filter pin (pin 21) to fix the AGC amplifier gain.
*3. Apply a DC voltage to the REC-CUR-Adj pin (pin 18) and adjust the output level.


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